Connecting bar for dentures



" Sept. 7, 19261 C. HENDERSON CONNECTING BAR FOR DENTURES Filed Sept.21, 1923 Patented 7, 1 926.

cnannns nnnnn'nsom or LAivsDowNn, PENNSYLVANIA, ASSIGNOE To was s. s.

WHITE DENTAL MANUFACTURIN "'fvAN'Ia e CONNECTING BAR roe nnnmnnns. a

i Application mat September 21,1933. emis-0. eeaee' zf inventionrelateslparticularly to lingual or palatal bars that are designedtoconnectpartial dentures, which are disposed upon opposite sides of themouth, and is especially directed to the form of the bar terminalattachments with which said dentures 1 are to be engaged.

, The principal objects of my invention are -to provide a dentureconnect ng bar with denture attaching terminals so formed as'to not onlyafford means for providlng rigid attachment for the plastic materialforming the denture, but which also affords a-construction whereby saidplastic material be readily packed into the interstices provided toreceive it. v

- Other objects of my invention are to provide a denture connecting Identure attaching terminalsso formed as to be capable of attachment withdentures composed of either plastic material or ofrmetal I with equalfacility.

7 minals that may 'My invention comprehends a denture connecting barhaving denture attachmg terbe' readily modified by the operator toconform to specific conditions that may be encountered. V

Specifically stated, the form of my invention as hereinafter described,comprises a denture connecting bar of any desired crosssection, havingits medial arch bowed to conform generally to the medial arch of thehuman mandible, and its terminal portions extended to conform to thelateral extrem- I is aperspective view of a denture connecting ities ofsaid arch and'fiattened to form terminal webs arranged to be attached tothe dentures, and having their edges provided with dovetail-shapednotches affording simi' larlyshaped intervening tongues, to insure rigidengagement of said dentures therewith.

My invention also includes all of the vari:

ous novel features of construction. and arrangement 'as hereinafter more"definitely ".tongues t, which affordffthe retention, may;

be'extende'd inthe plane of the body of the 7 terminal webs 2, asshownin Fig-.w-l, in which specified.

' In the accompanying drawings, Figure l bar constructed in accordancewith my. in- .vent1on';;F1g. 2 ;1s a plan view of saldiden- Iture'connecting bar showing a possible modi- ,fication' thereof; Fig. *3is a transverse vertical sectionalview of the denture attachingterminals of the bar shown in 2,- taken on the line 3-3. in. saidfigures; Fig.4 is a side elevational view ofa dentureconnecting metal orother suitable, material. bar having its bar. embodying aino'dified formof denture attaching terminalfandFig; 5 is-atransverse verticalsectional view of the sanctum:

shown in Fig. 4;, taken on the line 5+5 in saidfigure. I i In the formof my invention shown in 1,'thedenture connecting bar 1 may be ofanydesired cross-section, preferably lenticor/term ni CORPORATION orrEnNsYL sod form or ovalescent. and bowed to subst'an- 'tially conformto the medial region'of the dental arch of the human'mandibl-e, beingwebs 2 diverging distally and-arranged to be P embedded in, orotherwise;attached to, the

iolm, which maybe composed of vulcanite,

Said denture attaching terminal webs 2 It may bepractical, and in somecases desirable, to distort the tongues 4;.laterally outare providedalong one of-their edges with I by the, den- V v s0J ward or inward, oralternately outward and" I I inward, as shown in Figs. 2 and 3, toincrease the retentive effect of'said tongues; This is particularlyadvantageous in the useof the denture connecting 'bar in its employmentwith vulcanite dentures". 9 1

In the form jof my invention shown in I a I Figs. land 5, the recessedor indented-ed e of the denture attaching terminal )Wb 7, may bethlckenedlaterally to provide the overhanging flanges'8 and '9, which,as shown in Fig. 5, generallyconform in cross-section to theconventlonal' dovetail, but. which .ob-.

viously may bevariously'shaped as desired.

My invention isadvantageousi'n that-th form "the; bar isespecia-lly-adapted to be soldered to a metal*denture, 1or said tonguesto eachparticulardenture of vulcanite. or othermaterial, as desired'.;

I do not desire to limt my 1nventio nto'the precise details ofconstruction and arrange provided with denture attaching terminal mentas herein set forth, as it is obvious that various modifications may bemade therein without departing from the essential fea? tures of myinvention as defined in the appended claiins.

Having thus described my invention, I claim:

1. A device of the class described, 00mprising a bendable barterminating in flat- Webs, the edges of which are-indented to formdovetail-shaped tongues, and similarly shaped relatively invel'ted re'esses.

2. A lingual bar having flat ends, one edge of each of said ends beingnotched to form' opposite lateral directions.

3. A lingual barhaving flat'ends, one edge of each'of said ends beingcut to form teeth, said teeth being bent alternately in opposite lateraldirections. x

4. A lingual bar having flat ends, the edge of eachof which is formedwith relatively severed teeth extended alternately in oppositelateraldirections.

In Witness whereof, I have hereunto set my hand thislith day ofSeptember, A. -D., 1923. l

CHARLES nnnnnnsonq

